Whiffletree-center



`(N0 Model.)

' H. SWAN. WHIPPLETREB CENTER.

No. 478,033. Patented June 28, 1892.

, UNITED STATES PATENT OFFICE.

HORACE SWAN, RUTLANJ), VERMONT.

WHIFFLETRE'E-CENTER.'

` SPECIFICATION forming part of Letters ZPatent No. 478,033, dated June28, 1892.

Application filed April 2, 1892- Serial No. 427,531. (No model.) l

To all whom it may concern,-

Be it known that I, HORACE SWAN, a citizen of the United States,residing at Rutland, in the county of Rutland and State of Vermont, haveinvented certain new and useful Improvements in Whiffletree-Fastenings;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to whiiietree and other analogous fasteningsof thattype usedas substitutes for the king pin or bolt; and its object is tosimplify and cheapen as well as improve the operation and effectivenessthereof,

and also afford increased convenience and facility for repairing thesame.

My invention consists in certain novel constructions, combinations, andarrangements of parts forming the whiiiletree-fastening, as will behereinafter described.

In the drawings, Figure 1 is a rear view of the whiiiletree-supportingcross-bar, whifdetree, and its fastening.v Fig. 2 is a horizontalsection of the fastening in the line ma: of Fig. 1. Fig. 3 is aperspective view of a portion of the cross-bar and that partl of thefastening which is screwed to the cross-bar. Fig. 4 isa perspective viewof that partof the fastening which is attached to the whiftletree asviewed from the under side and rear. Fig. 5 is a vertical cross-sectionof the cross-bar, whiiiietree, and fastening as seen in Fig. l;

and Fig. 6 is a top view of the cross-bar, whifdetree, and fastening,the dotted lines illustrating the vibrator-y movements of thesingletree. I7/

A in the drawings is the cross-bar; B, the whiftletree; C, the lowerpart of thefastening, and D the upper part; E, the packing, of

leather or molded or stamped paper-stock,

and F the plate by which the parts C and D are secured together and thepart D, with the whiftletree, permitted to vibrate Without separating.The part C is a metal casting with flanges a, by which it is screwed tothe crossbar A, and with a vertical bearing recessed portion ofsegmental shape, being a portion of a circle a little greater than ahalf-circle and open at its rear, as indicated at c, and be- ;low thissegmental recessed portion it has a *horizontal segmental recess d ofgreater diameter than the recess l), said recess being z overhun g bythe metal portion in which the recess Z) is formed.

.surface of the bottom e interlocking sustaining-lugs f are formed onthe rear edge of the Vplate outside the recesses b d, as shown, forapurpose presently described. The part D is also a metal casting, and itis formed with flanges b', by which it is screwed to the Whittlet-ree,and a segmental neck g and a segmental head h, the neck and head being,respectively, portions of circles a little greater than halfcircles. Theneck and head form an inverted- T coupling portion, which concentricallyand closely fits the recesses b and d, and when the parts C and Dareconnected by horizontally inserting C into D through the open back ofthe plate C a separation thereof by a vertical movement cannot takeplace, but a horizontal vibratory movement in a back and forwarddirection of the plate D upon the plate C is permitted, as illustratedby dotted lines in Fig. 6. The packing of leather or stamped or moldedpaper-stock E may be in several pieces or molded in one piece, and it isinserted at the open back of the fastening, so as to lie upon the bottomof plate C and against all of the surfaces where friction'and rattlingcontact would take place if the kpacking was not interposed between theplates C and D. This packing remainslike a pillar and can be Vreadilywithdrawn and new packing introduced at the rear of the fastening parts.The plate F is formed with afront face, which is curved or beveled, asat m, and at the junction of the bevels, `which is midway of the plate,a` scale-beam-like bearing-edge fm vis formed, as shown, and oppositethis bearingedge a piece of packing-leather or paper-stock E is appliedupon the rear surface of theplate D, and against the same the Vedge mbears, and thus wear of the plates F and D' and rattling are prevented.The plate F is also formed with two bearing-lugs fn, and below theselugs are ianges b2, by which it is IOO secured to the cross-bar. Thelugs n rest upon the lugs f of the plate D and prevent the plate F fromdescending, and they also form a horizontal bearing for the plate D tovibrate upon outside the back edge of the packing on a plane with thebottom portion of the upper surface of that part of the packing whichrests on the bottom of the plate D.

By constructing the Whiiietree-fastenin g in the manner herein describedthe bearing portions can be made of about one-half the metall segmentalbearing-recesses b and d, open at back, the plate D, having segmentalneck g and segmental head h, and the confining-stop and bearing-plate F,having curved or beveled surfaces with a scale-beaIn-like bearing-edgebetween them, substantially as described.

2. The plate C, having segmental bearingrecesses Z) and d and open atback, the plate D, having segmental neck g and head h, packing E,applied between the points of contact of the plates with one another,and the confining-stop and bearing-plate F, substantially as described.

3. The combination, with the plates D and F, of the removableconfining-stop and bearing-plate F, fastened on the cross-bar, formedwith beveled surfaces and a bearing-edge at the back of the plates C andD, andpacked at E, substantially as described.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

HORACE SWAN. Witnesees:

E. S. WHITTAKER, FRED Il, HYDE.

